<!DOCTYPE html>
<html>
    <body>
        <div onmouseover="fun1(this)" onmouseout="fun2(this)" style="background-color:#D94A38;width:120px;height:20px;padding:40px;">你好</div>
        <script>
            function fun1(obj){
                obj.innerHTML="Thank you"
            }
            function fun2(obj){
                obj.innerHTML="你好"
            }
        </script>
    </body>
</html>